Ok, I have a one-gallon tank and I've been doing daily 50% water changes trying to get the ammonia levels down. However, it seemed like so matter how often or how much I change the water it just sits at 1.0 ppm. I'm using an API test kit (liquid, not strips). I heard about someone having a problem with ammonia in the tap water, so I decided to test mine, and sure enough, there it is! I tested both conditioned and unconditioned tap water and both showed 1.0 ppm ammonia. I was beginning to think the test kit didn't work, but I decided to test a bottle of water I had laying around, and it came up 0 ppm, so the test must work. However, this leaves me in a bit of a pickle, because if the tap water has ammonia then doing water changes isn't getting me anywhere. I don't know what to do now, because I've heard you should not use bottled water since it is missing a lot of important nutrients. Is there some kind of water I can use that won't have ammonia already in it???